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Related Concept Videos

Autobiographical Memory01:14

Autobiographical Memory

Autobiographical memory is a unique type of episodic memory that involves recollecting personal life experiences. It allows individuals to remember significant events from their past, creating a narrative of their lives. One interesting phenomenon related to autobiographical memory is the reminiscence bump. This effect refers to the tendency of adults to recall more events from their second and third decades of life — typically between ages 10 to 30 — than from other periods. This period is...
Explicit Memories01:27

Explicit Memories

Explicit memories, also known as declarative memories, are consciously remembered, recalled, and reported. Studying for a chemistry exam involves material that will become part of explicit memory. There are two types of explicit memory: episodic and semantic.
Episodic memory contains information about personally experienced events and is reported as a story. An example of episodic memory is recalling a birthday celebration. This type of memory includes the what, where, and when of an event, as...
Eyewitness Memory01:22

Eyewitness Memory

Eyewitness memory refers to the recollection of events by someone who has directly witnessed them, often serving as critical evidence in legal settings. This type of memory is commonly used in criminal cases where a witness describes details like a suspect's appearance, clothing, or behavior during a crime. However, despite its perceived reliability, eyewitness memory is prone to significant errors.
One such error is memory distortion, which occurs because human memory does not function like a...
Storage01:23

Storage

A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze each...
Interference and Decay01:16

Interference and Decay

Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
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Flashbulb Memory01:16

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A flashbulb memory is a highly vivid and detailed memory, often linked to events of significant emotional impact. These memories stand out in contrast to everyday memories due to their clarity and the precision with which they are recalled. The strong emotions associated with the event act as a catalyst, ensuring that specific details, such as one's location, actions, and even peripheral elements, are etched into memory with remarkable accuracy. For example, many people can vividly recall where...

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Related Experiment Video

Updated: May 10, 2026

A Real-world What-Where-When Memory Test
09:13

A Real-world What-Where-When Memory Test

Published on: May 16, 2017

The evolution of episodic memory.

Timothy A Allen1, Norbert J Fortin

  • 1Center for the Neurobiology of Learning and Memory, Department of Neurobiology and Behavior, University of California, Irvine, CA 92697, USA.

Proceedings of the National Academy of Sciences of the United States of America
|June 12, 2013
PubMed
Summary
This summary is machine-generated.

Episodic memory, crucial for recalling past events, has a long evolutionary history, not a recent origin. Evidence suggests shared neural circuits in mammals and birds point to ancient origins rather than convergent evolution.

Keywords:
animal modelsentorhinal cortexhippocampusparahippocampal regionprefrontal cortex

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Area of Science:

  • Neuroscience
  • Evolutionary Biology
  • Cognitive Psychology

Background:

  • The origin of episodic memory is debated, with some viewing it as a recent human-specific trait.
  • This perspective challenges the notion that episodic memory lacks a clear evolutionary trajectory.

Purpose of the Study:

  • To review evidence supporting a long evolutionary history of episodic memory.
  • To explore the neural and evolutionary underpinnings of episodic memory across species.

Main Methods:

  • Comparative analysis of brain structures and functions related to memory in humans, mammals, and birds.
  • Review of existing literature on episodic memory and its potential evolutionary precursors.

Main Results:

  • Fundamental features of episodic memory are present in mammals and birds.
  • Homologous brain regions support episodic memory in humans and other species.
  • A shared neural circuit suggests protoepisodic memory systems in vertebrates.

Conclusions:

  • Episodic memory likely evolved from ancient neural systems shared across vertebrates.
  • The evolution of episodic memory may be driven by shared ancestry rather than convergent evolution.
  • Understanding its evolutionary timeline offers insights into memory's adaptive advantages and species-specific variations.